Kawaguchi International Patent Office
川口 義雄
Kawaguchi International Patent Office is a Japan-based patent agent with 36 years of recorded international activity (1990–2025). 2,534 total international patent cases are on record, spanning 4 foreign jurisdictions and 619 distinct corporate applicants. This public snapshot is drawn from FlowIP's IP5 patent exchange dataset; full partner lists, time series, and decision-maker analysis are available to signed-in users.
- Total cases
- 2,534
- Last 5 years
- 347
- Applicants
- 619
- Flow type
- Incoming-heavy
Applicant count reflects distinct corporate clients represented in outgoing filings.
Activity trend (last 10 years)
Top international partners
Sends cases to
Similar Japan firms
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